What is a reflex arc?
A) A neural pathway that produces a rapid automatic response B) The path of a planet C) A curved bone […]
Biology, Nervous System
Nervous System
Biology, Nervous System
What is a synapse?
A) The whole spinal cord B) A bone joint C) An opening in a leaf D) A junction where one […]
Biology, Nervous System
What is an action potential?
A) A permanent break in DNA B) A rapid electrical change that travels along an excitable membrane C) A blood-clotting […]
Biology, Nervous System
What is an antigen in an immune response?
A) A substance recognized by the immune system B) A kind of red-cell fuel C) A type of sound wave […]
Biology, Nervous System
What is the function of the spinal cord in a reflex?
A) It converts all light into sound B) It makes blood plasma C) It can integrate a rapid response before […]
Biology, Nervous System
What is the junction at which a neuron communicates with another cell?
A) Alveolus B) Glomerulus C) Synapse D) Stoma Answer: C Explanation: A synapse is a contact point for neuronal communication. […]
Biology, Nervous System
What is the protective fluid around the brain and spinal cord called?
A) Blood plasma only B) Bile C) Cerebrospinal fluid D) Lymph from lungs Answer: C Explanation: Cerebrospinal fluid cushions the […]
Biology, Nervous System
What primarily detects airborne odor molecules?
A) Retinal rods B) Cochlear hair cells C) Skin melanin D) Olfactory receptors in the nose Answer: D Explanation: Olfactory […]
Biology, Nervous System
What restores much of a neuron’s resting membrane potential after the peak of an action potential?
A) Inward flow of starch B) Making all sodium vanish C) Outward flow of potassium ions D) Photosynthesis in an […]
Biology, Nervous System
Which brain region helps regulate body temperature and hunger?
A) Cochlea B) Appendix C) Hypothalamus D) Clavicle Answer: C Explanation: The hypothalamus helps maintain internal balance. It coordinates responses […]